(I included an excerpt from the requirement below.)Some ideas I had - engaging a local real estate agency to do this, or a local notary public, or anyone who provides private mailbox services in the city.Will appreciate any input!

If see something on horizon, or fear potential, engage in strategy that mitigates and stands impervious too that, OR benefits from it.

Engaging with experienced professionals can provide valuable advice and guidance based on their firsthand experiences.

In general the activity engaged in at a property is what legally determines how it is classified.

"If you operate your rental for a gain or profit, you are engaged in a trade or business".

You have to do your own research and I would also recommend engaging a local property mgt company and get their perspective on the property.

Or will traditional lenders shy away from this type of engagement?

Yes the rules changing mid game really sucks...haha thank you for seeing my pain! 

I'll play the devil's advocate and say that you absolutely do need your own website/mailing list/CRM/etc because those are the only platforms you can truly own your customer data and engage directly with your customers without the filter of an intermediary stepping in to define the rules of engagement. 

.- Social Media: Follow and engage with real estate investors and groups on social media platforms like Facebook, LinkedIn, Instagram, and Twitter.